Nitrogen abundances in disk and halo dwarfs

Details Nitrogen abundances in disk and halo dwarfs Nitrogen abundances in disk and halo dwarfs

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...279..220t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 279, April 1, 1984, p. 220-224. Research supported by the Robert A. Welch F

Astronomy and Astrophysics

Astrophysics

92

Abundance, Cosmochemistry, Dwarf Stars, Nitrogen, Stellar Spectra, Astronomical Spectroscopy, Astrophysics, Carbon, F Stars, G Stars, Line Spectra, Nuclear Fusion

Scientific paper

Atmospheric parameters and abundances are calculated for 14 F and G dwarfs of the disk and halo populations with metal deficiencies between -2.3 and -0.3 on the basis of high-resolution spectra of the 3360-A NH and 4310-A CH bands obtained using a coudespectrograph and a 936-diode Digicon on the 2.7-m telescope at McDonald Observatory, with resolutions 26 pm (NH) and 12 pm (CH). The results are presented in tables and graphs and discussed in the light of theoretical models of N nucleosynthesis through CNO cycles. The identification of N as a primary element in these objects is explained by the tendency of O to be less deficient than C, N, or Fe.

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